QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000jrjv
USGS usp000jrjv
3 Sept 2012, 11:00
77 km SSW of Adak, Alaska
A magnitude 5 mb earthquake at 43.3 km depth.
Published location
Where is 77 km SSW of Adak, Alaska?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
51.224000, -177.052000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
usp000jrjv
Coordinates
51.224, -177.052
Network
us
Significance
385